[MacPorts] #54792: qbs port fails to upgrade

[MacPorts]

#54792: qbs port fails to upgrade
------------------------+-----------------
 Reporter:  mouse07410  |      Owner:
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  abs
------------------------+-----------------
 MacOS 10.12.6, Xcode-8.3.3, current Macports.

 {{{
 $ sudo port upgrade qbs
 --->  Computing dependencies for qbs
 --->  Fetching archive for qbs
 --->  Attempting to fetch qbs-1.9.0_0.darwin_16.x86_64.tbz2 from
 https://packages.macports.org/qbs
 --->  Attempting to fetch qbs-1.9.0_0.darwin_16.x86_64.tbz2 from
 http://mse.uk.packages.macports.org/sites/packages.macports.org/qbs
 --->  Attempting to fetch qbs-1.9.0_0.darwin_16.x86_64.tbz2 from
 http://lil.fr.packages.macports.org/qbs
 --->  Fetching distfiles for qbs
 --->  Verifying checksums for qbs
 --->  Extracting qbs
 --->  Configuring qbs
 Error: Failed to configure qbs: couldn't open
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_qbs/qbs/work
 /qbs-src-1.9.0/.qmake.cache": no such file or directory
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_qbs/qbs/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 $
 }}}

 Complete log attached. (Why doesn't it just rebuild .qmake.cache?)

--
Ticket URL: <https://trac.macports.org/ticket/54792>
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